Does anyone run Falken RT-615's at the track?
#17
03-13-2009, 05:55 PM
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I realize they have the correct size, I guess I meant to say that the measurements were funky..I remember they were quite a bit on the large end of the size spectrum as different brands even though rated the same size have different measurements. It's been awhile since I have seen a Hoosier comp tire.
Dave
#19
03-13-2009, 08:50 PM
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We were..but those sizes you listed aren't going to work...we are trying to give you some alternatives. There really isn't a correct size for the Falkens.
Dave
Dave
#23
03-16-2009, 07:57 AM
I hear the Falken is a street tire comparable with the PS2, not at all comparable to the RA1 / R888 / Nitto NT01.
OEM 19s that come on our cars are 25.5" 817 RPM front and 26" 799 RPM rear (2.25% diameter differential between front and rear).
Falken does make 245/40-18 at 25.6" 803 RPM and 315/30-18 25.6" 813 RPM, which is pretty close. (1.25% differential, but in the wrong direction with rear being a larger diameter).
Nitto NT01s are 245/40-18 25.55" 813 RPM and 315/30-18 25.35" 819 RPM.
Toyo R888 has almost too many size options in 18"... Their 335/30-18 is 26" diameter and 799 RPM, which exactly matches OEM. Match that up with 235/40-18 at 25.5" and 814 RPM and you have almost an exact match with OEM (1.9% differential). Go with 245/40-18 for a little more width and you get 25.7" and 808 RPM, a 1.1% difference. 335 feels wider than most would use and the 305/35-18 is 26.3" and 790 RPM (close), while the 315/30-18 is 25.5" and 814 RPM (too small diameter).
So, in R888 would one use 235/305 or 245/305 -- or go all the way up to 235/335 or 245/335? That's a pretty big contact patch difference...
The quickest tires I've had on either my 997S or 997GT3 have been the Toyo RA1 in 245/305. They are 245/40-18 25.6" 812 RPM and 305/35-18 26.3" 790 RPM, a 2.8% differential front vs. rear.
I'm thinking either the RA1 245/305 or the R888 235 or 245 / 305 might be the way to go. Then again, I'd love to know how the 235-245 / 335 works...
OEM 19s that come on our cars are 25.5" 817 RPM front and 26" 799 RPM rear (2.25% diameter differential between front and rear).
Falken does make 245/40-18 at 25.6" 803 RPM and 315/30-18 25.6" 813 RPM, which is pretty close. (1.25% differential, but in the wrong direction with rear being a larger diameter).
Nitto NT01s are 245/40-18 25.55" 813 RPM and 315/30-18 25.35" 819 RPM.
Toyo R888 has almost too many size options in 18"... Their 335/30-18 is 26" diameter and 799 RPM, which exactly matches OEM. Match that up with 235/40-18 at 25.5" and 814 RPM and you have almost an exact match with OEM (1.9% differential). Go with 245/40-18 for a little more width and you get 25.7" and 808 RPM, a 1.1% difference. 335 feels wider than most would use and the 305/35-18 is 26.3" and 790 RPM (close), while the 315/30-18 is 25.5" and 814 RPM (too small diameter).
So, in R888 would one use 235/305 or 245/305 -- or go all the way up to 235/335 or 245/335? That's a pretty big contact patch difference...
The quickest tires I've had on either my 997S or 997GT3 have been the Toyo RA1 in 245/305. They are 245/40-18 25.6" 812 RPM and 305/35-18 26.3" 790 RPM, a 2.8% differential front vs. rear.
I'm thinking either the RA1 245/305 or the R888 235 or 245 / 305 might be the way to go. Then again, I'd love to know how the 235-245 / 335 works...
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